根据上下文来确定时态有些句子没有明显的时间状语,又不能用时态呼应规则来对照,这时就可以根据上下文内容来判断时间关系,确定正确时态.A.Wherearethetwins?B.They______(go)tovisitUncleWang.3.根据主从句的关系来确定时态.4.根据语言习惯来确定时态*1.come,go,leave等趋向性动词的进行时可用来表示即将发生的动作.*2.永恒的真理和客观存在的状态用一般现在时.*3.祈使句中,或在情态动词,助动词后,谓语动词用原形Don't_____(read)inthesun,willyou?You'dbetter_____(stay)athomesinceit'srainingoutside.注意所填动词的语态Todaybothbasketballandvolleyball_________(play)inmanycountries.确定动词的形式1.bebusy,whatabout等后用动词的-ing形式.2.在介词后一般应用动词的-ing形式.3.在keep,enjoy,finish,mind等动词后采用动词的--ing形式.4.在动词decide,hope,wish,hate等动词后应用动词不定式作宾语,而在ask,tell,want,teach之后则用动词不定式的复合结构,即“asksb.todosth.”的形式5.在see,hear,watch,make,let等后面作宾语补足语的动词不定式应省略动词不定式符号“to”,但在被动句中,应添上"to".6.在It‘stime(forsb.)todosth.It'skind/nice/goodofsb.todosth.Ittakessb.sometimetodosth.的句型中,动词不定式短语作句子真正的主语.7.疑问代词/副词(why除外)+todosth.结构,可在句中作主语,表语和宾语.练习题：1.TheGreatGreenWallwillstopthewindfrom________(blow)theearthaway.2.MrSmithkepton_____(ask)theplayerstoremember-----TEAMWORK3.Alicedidn'thearwhattheteachersaidjustnow,soshedoesn'tknowhow____(do)theproblem.4.Thepolicemanaskedtheoldgrannytoputdownherheavyboxandlethim______(carry)itforher.5.用help,happen,listen,have,ask,be,plant,miss,leave,look的适当形式填空:(1).WangHaiisagoodcomrade.Healwaysdoeshisbest________others.(2).Digtheholebigenough,orthetreescan’t___________well.(3).It'stimeforclass.Let'sstop_______totheteacher.(4).Herfaceturnedredwhenshe_______tosingasongforallofus.(5).SheisolderthanMarybut________muchyounger.(6).--Ican'tfindmykeys.--Maybeyou___________themathome.(7).Wewaitedinthenextroomwhilethey____________ameeting.(8).Hurryup.You__________thetrainifyoudon't.思考题：用send,show,turn,cost,write,fly,get,stop,see,do,hear,go的适当形式填空1.____you___eachothersinceyouleftschooltenyearsago?2.What___they___at8:00yesterdayevening.3.TheSmithsaregettingready___toAustraliafortheirholdiay.4.Thebeautifuljacket___toomuch,doesn'tit?5.LucyandLilywereplayingcardswhenthey___aloudknockatthedoor.6.Theradiosaystherain___lateron.7.Theboy___tohospitalassoonasthetrafficaccidenthappened.8.Todayfilms___inEnglisheverywhereintheworld.9.It'ssummernow.Thedays___longerandthenightsshorter.10.Mother___toShanghaiandshe'llbebackinaweekorso.动词的时态（上）A:一般现在时棗通常表示目前阶段经常发生的动作或存在的状态。结构：1）be动词的第一人称单数为，第三人称单数为，其他人称为。有一顺口溜体现了它的用法：我是am你是are，is跟着他她它,复数都用are肯定式:主语+am/is/are+其他否定式:主语+am/is/are+not+其他疑问式:Am/Is/Are+主语+其他?简略回答:(肯)Yes,主语+am/is/are(否)No,主语+am/is/arenot缩写形式:I'm==IamThat's==ThatisWe're==WeareWhat's==WhatisYou're==YouareWho's==WhoisThey're==TheyareWhere's==WhereisHe's==Heisisn't==isnotShe's==Sheisaren't==arenotIt's==Itis2）行为动词除主语是第三人称单数外，都用动词原形，主语是第三人称单数时，在动词词尾加-s或-es肯定式:主语+动词原形/动词的第三人称单数，否定式:主语+助动词don't/doesn't+动词原形+其他疑问式:Do/Does+主语+动词原形+其他简略回答:(肯)Yes,主语+do/does(否)No,主语+do/doesnot缩写形式:don't==donotdoesn't==doesnot注意：have的第三人称单数为has用法：1.表示事实,现状,性质...
